Rail fastening arrangements

ABSTRACT

The invention relates to a rail fastening arrangement for securing a flat bottom rail on a foundation having preformed holes therein. There is provided a baseplate on which the flat bottom of the rail is adapted to rest and means for securing the baseplate to the preformed holes in the foundation. A pair of rail clips is provided one on each side of the rail with bolt means passing through a bolt aperture in each clip and engaging in a preformed bolt hole in the baseplate. Each clip has symmetrically spaced about its bolt aperture at least one pair of projecting heel lugs and the baseplate has symmetrically spaced about its bolt hole a complementary number of recesses adapted to receive and locate the clip heel lugs. Each clip is engageable with the baseplate with its lugs received and locates in the baseplate recesses, in at least two alternative dispositions. Each clip has for each lug a respective rail foot abutting and clamping shoulder, one of which rail foot abutting and clamping shoulders faces inwardly towards the rail foot for each alternative disposition of engagement of the clip with the baseplate and for each clip, each respective rail foot abutting and clamping shoulder is differentially spaced from the centre of the bolt aperture of the clip.

United States Patent 11 1 Varga et al.

[ Sept. 11, 1973 RAIL FASTENING ARRANGEMENTS [75] Inventors: Otto HermanVarga,

Bradford-on-Avon, England; Ralph Huston, Pfafftown, N.C.

Resilient Grip Limited, Bristol, England; by said Varga [22] Filed: Nov.3, 1971 [21] Appl. No.: 195,275

[73] Assignee:

[52] U.S. C1. 238/338, 238/287 [51] Int. Cl E01b 9/46 [58] Field ofSearch 238/338, 287, 283, 238/310-4115, 349, 339-341 [56] V ReferencesCited UNITED STATES PATENTS 1,635,816 7/1927 Brown 238/338 1,845,990 21932 Schwinn.... 238/341 3,653,591 4 1972 Varga 238 283 3,576,293 4 1971Landis et al. 238 310 3,451,621 6/1969 Splinter 238/310 10/1936 Werneret al 238/304 Primary ExaminerGerald M. Forlenza AssistantExaminer-Richard A. Bertsch Att0rney-Luke A. Mattare et al.

[57] ABSTRACT The invention relates to a rail fastening arrangement forsecuring a flat bottom rail on a foundation having preformed holestherein.

There is provided a baseplate on which the flat bottom of the rail isadapted to rest and means for securing the baseplate to the preformedholes in the foundation. A pair of rail clips is provided one on eachside of the rail with bolt means passing through a bolt aperture in eachclip and engaging in a preformed bolt hole in the baseplatev Each cliphas symmetrically spaced about its bolt aperture at least one pair ofprojecting heel lugs and the baseplate has symmetrically spaced aboutits bolt hole a complementary number of recesses adapted to receive andlocate the clip heel lugs. Each clip is engageable with the baseplatewith its lugs received and locates in the baseplate recesses, in atleast two alternative dispositions. Each clip has for eachvlug arespective rail foot abutting and clamping shoulder, one of which railfoot abutting and. clamping shoulders faces inwardly towards the railfoot for each alternative disposition of engagement of the clip with thebaseplate and for each clip, each respective rail foot abutting andclamping shoulder is differentially spaced from the centre of the boltaperture of the clip.

11 Claims, 6 Drawing Figures RAIL FASTENING ARRANGEMENTS This inventionrelates to rail mountings or anchorage arrangements with especialreference to those for use with flat bottom rails.

The present invention has for its general object to provide a mountingfor a flat bottom rail which permits lateral adjustment of the clampingmeans for the rail relative to the sleeper or other analogous foundationeven when the anchorage bolts have to be entered in predrilled holes inthe foundation. Put another way, assuming a sleeper with predrilledholes to have been located on the track bed, or assuming holes to havebeen drilled in a fixed foundation or in a sleeper, the invention hasfor its object to provide clamping means for the rail with boltsengageable with the preformed holes and which permit some degree offlexibility for the lateral position of the rail to set the gauge or toset the rail at a curve. After being located as desired, the rail isrequired to be firmly held by the clamping means of the anchorage.

The invention utilises a baseplate and clip arrangement which can beused in conjunction with rail fastening assemblies of various types,i.e. those which are spiked or bolted to sleepers or foundations, andalso those which are secured to the rail foundation by means ofexpansion bolt anchorages.

Essentially this invention employs multi-position clips to secure therail to the baseplate and the clips are of the type which form alocation for the edge of the rail foot and are bolted down to thebaseplate to exert a grip on the rail foot against creep anddisplacement.

This invention provides a rail fastening arrangement for securing a flatbottom rail on a foundation having preformed holes thedrein comprisingin combination a. a baseplate on which the flat bottom of the rail isadapted to rest andmeans for securing the baseplate to the preformedholes in the foundation;

b. a pair of rail clips one on each side of the rail;

c. bolt means passing through a bolt aperture in each clip and engagingin a preformed bolt hole in the baseplate;

d. each clip having symmetrically spaced about its bolt aperture atleast one pair of projecting heel lugs and the baseplate havingsymmetrically spaced about its bolt hole a complementary number ofrecesses adapted to receive and locate the clip heel lugs;

e. each clip being engageable with the baseplate with its lugs receivedand located in'the baseplate recesses, in at least two alternativedispositions;

f. and each clip having for each lug, a respective rail foot abuttingand clamping shoulder, one of which rail foot abutting andclampingshoulders faces inwardly towards the rail foot for each alternativedisposition of engagement of the clip with the baseplate;

g. and wherein for each clip, each respective rail foot abutting andclamping shoulder is differentially spaced from the centre of the boltaperture of the clip.

The lateral position of the clips is secured by the heel lugs enteringthe recesses in the baseplate.

In its basic. form the rail fastening arrangement comprises a'flat steelbaseplate providing for bolt or stud means to bolt down the rail cliponeach side of the rail and sets of recesses or perforations in thebaseplate to accommodate two or more heel lugs per clip. Themultiposition clips are so formed that for each heel lug therecorresponds a rail foot abutting and clamping shoulder on the oppositeside of the bolt aperture.

While the heel lugs are preferably arranged symmetrically around therail clip bolt aperture, the rail locating edges corresponding to thevarious lugs are at varying distances from the clip bolt aperturecentre, thus providing a multiplicity of positions for the rail foot inrelation to the clip bolts which are in fixed relation to the baseplate.

It will be apparent that the positions of the clips on opposite sides ofthe rail must be changed around and appropriately dispositioned in sucha manner that as the rail foot is moved further from; the clip boltcentre on the one side it can move closer to the clip bolt centre on theopposite side by a corresponding amount.

In this manner a number of discreet positions of the rail in relation tothe baseplate centre line are provided for, the intervals and range ofvariation being controlled by the design of the clips.

In its simplest form the baseplate may be provided with two equi-distantrecesses or perforations for clip lugs on each side of the clip boltcentres on each side of the rail. If the corresponding clips areprovided with two lugs each therewill be two positions for each clip oneach side of the raildiffering by a rotation of 180.

If the two clips are identical this arrangement will provide altogethertwo rail positions whereas if the clips are different so that thelug-to-locating-edge differences are greater on one than on the other,this arrangernent will provide a total of four rail positions achievedby interchanging the clips between the two sides of the rail in additionto rotating them 180 on each side.

As a further variation the clips may be made two sided and invertible inthe sense that locating lugs extend both vertically upwards as well asvertically downwards, each clip will therefore be able to assume fourpositions on each side of the rail, two positions each way up, and ifthe two clips are different a total of eight rail positions is possibleby interchanging clips between the two sides of the rail.

It will be understood that the clip positions on either side of the railmust be so designed and so chosen that each increase of distance betweenthe clip bolt and the rail edge on one side can correspond to the exactcorresponding reduction in the distance between rail edge and clip boltonthe opposite side.

The number of rail lug receiving recesses in the baseplate can beincreased to four disposed symmetrically around the clip bolt. With twolugs the multi-position clip will be in strip form whereas if it hasfour lugs the clip will be cruciform providing alternative positions foreach rotation. If in addition the clips are two sided providingpositions each way up with locating lugs extending both upwards anddownwards, each clip will in fact offer eight distinct f xing positionsfor the rail. With two identical clips on each side of the rail, a totalof eight positions for the rail are provided whereas if the clips aremade different and suitably graded a total of sixteen rail positions forthe rail can be provided by adding to the eight clip positions thepossibility of interchanging the clips between the two sides.

The most economical arrangement most likely to meet general requirementsistwo strip form clips each with positions both ways upand with two lugsextending upwards and downwards giving a total of four positions foreach clip. Two graded clips used together 3 would thus provide eightrail positions. In a practical case the intervals between the railpositions could be one-eighth inch and thus the total range ofadjustment with this arrangement would be seven-eights inch for eachrail.

The clip construction may be of cast or forged steel or they may be ofmalleable or other suitable cast iron material. In a preferred detaildesign the clip will have a hole for the clip bolt to pass through, andthis hole will be placed centrally and symmetrically in relation to thelocating lugs. Where locating lugs extend in both directions the lugshave to be placed at sufficient distance from the bolt hole toaccommodate a box spanner around the bolt head or nut which may be usedto fix down the clip to the baseplate.

The bolt means for clamping the clip to the baseplate can be of varioustypes. It can consist of an upstanding bolt with head suitablyaccommodated underneath the baseplate, or it can be in form of a studwelded or press fitted to the baseplate. Alternatively, the baseplatemaybe tapped to receive the fixing bolt screwed in from the top throughthe rail clip. As the baseplate is likely to be relatively thin,however, athreaded boss or ferrule may conveniently be fitted to thebaseplate by welding or press fit. I r

The present arrangement is likely to be useful and beneficial in theconstruction of track for subway and urban railways in which tightcurves and rail wear both create requirements for gauge adjustment. Thepossible use of a'plain perforated baseplate'offers great economicadvantages over ridged, ribbed or otherprofiled types of baseplate andthe system of track adjustment specified isrobust and economical both ininstallation and service.

Two embodiments of the inventionwill be described by way of example withreference to the accompanying drawings in which FIG. I is a plan view ofa rail fastening arrangement according to a first embodiment oftheinvention, and

FIG. 2 is a cross sectional view taken on the lines II II of FIG. 1;

FIG. 3 is a cross sectional view taken on the lines III III of FIGQI;

FIG. 4 is a plan view of a second embodiment of the rail fasteningarrangement according to the invention;

FIG. 5 is a cross sectional view taken on the lines V V of FIG. 4; 4

FIG. 6 is a further cross sectional view taken on the lines VI VI of no.4.

Similar reference numbers will be employed for like or analogouscomponents and parts in the descriptions of the two embodiments.

Referring first to FIGS. 1 to 3 the rail fastening arrangement hereshown comprises a baseplate l resting on a resilient rail pad 2 which inturn rests on a foundation having therein two preformed holes one ofwhich is shown at 21 in FIG. 3.

The baseplate l is secured to the foundation by bolt means generallydesignated 22 and 23 in FIG. 1 engaging in the preformed holes 21 of thefoundation 20.

In this embodiment the bolt means 22 and 23 each comprise a bolt 4having -an extended shank 4a terminating in an enlarged corrugated head4b, the shank 4a and the head 4b being encased in a sleeve 3 ofelastomeric material.

The bolt 4 together with its encasing sleeve 3 pass through holes 1a inthe baseplate l and corresponding holes 2a in the rail pad 2.

12 represents a nut on the threaded upper end of the bolt 4 while 8represents a steel washer and 7 an elastomeric washer interposed betweenthe steel washer 8 and the baseplate l.

The arrangement as so far described is such that when the nut 12 istightened on the bolt 4 the bolt is caused to rise and the sleeve 3 ofelastomeric material is compressed between the bolt head 4 and thewasher 8 and hence tends to expand into engagement with the walls of thepreformed hole 21 in the foundation 20.

The foundation 20 may be a sleeper or other analogous foundation and maybe concrete.

When the nut 12 is further tightened down after the sleeve 3 hasexpanded into interlocking engagement with the wall of the foundationholes 21, the baseplate 1 will be held firmly down against thefoundation 20 with the sleeve 3 and the rubber washer 7 in conjunctionwith the rail pad 2 serving to insulate the baseplate 1 from thefoundation 20 and resiliently to mount the baseplate on the foundation.

30 represents a flat bottom rail resting on the baseplate 1 andaccording to the invention for securing the rail to the baseplate, apair of clips generally designated 5 are provided, one on each side ofthe rail.

As will be seen from FIG. I the clips are of strip form in plan view andare each secured by bolts 11 to threaded inserts 9 located in preformedbolt holes 42 formed for the purpose in the baseplate l. 10 represents asteel washer between the head of the bolt 11 and each clip 5.

The bolts 11 pass through a cylindrical aperture 40 in each clip 5. Aswill be seen from FIG- 2 each clip 5 has symmetrically spaced about itsbolt aperture 40 on a lower side a first pair of projecting heellugs 41and on its opposite side a second pair of oppositely projecting heellugs 41. v

The baseplate 1 has symmetrically spaced about the bolt holes 42 a pairof recesses 43 adapted to receive and locate a pair of the clip heellugs 41.

It will be apparent from an examination of FIGS. 1 and 2 that each clip5 may be disposed with its heel lugs 41 engaged in the complementarybaseplate recesses in one of four alternative dispositions. Thus it maybe located in the disposition shown in FIG. 2 or the clip may be rotatedthrough in the plane of FIG. 2 and hence inverted to give a seconddisposition. Alternatively and referring to FIG. 1 the clip may berotated in the plane of that Figure through 180 to give a thirddispostion and then inverted to give a fourth disposition.

For each of the alternative dispositions in which each clip can bearranged, it has a respective rail foot abutting and clamping shoulderfacing inwardly towards the rail foot. Thus the clip 5 on the left ofFIG. 2 has four rail foot abutting and clamping shoulders 45a, 45b, 45c,45d respectively. Similarly the clip 5 on the right of FIG. 2 has fourrail foot abutting and clamping shoulders 45e, 45f, 45g, 45h.

An essential feature of the invention is that for each clip each of itsrail foot abutting and clamping shoulders is difi'erentially spaced fromthe centre of the clip bolt aperture 40 of that clip. Thus the shoulders45a, 45b, 45c, 45d are each differentially spaced from the centre of theclip bolt aperture 40.

If the disposition of the clip 5 on one side of the rail is changed,clearly the clip onthe opposite side of the rail must also be changed inorder to be in proper clamping relationship with the rail foot.

if then the clips on the two sides of the rail are identical, the railcan be adjusted laterally and clamped in one of four positions. If,however, the two clips are not identical and all the eight shoulders ofthe two clips are differentially spaced from the clip bolt centre lines,the number of possible positions for the rail in which it can be locatedand clamped will be doubled by interchanging the clipsfrom one side ofthe rail to the other.

' The second embodiment of the invention illustrated in FIGS. 4, 5 and 6differs from the first embodiment in two main respects.

Firstly the same bolt anchorage devices are employed both to secure thebaseplate l to the holes 21 in the foundation and to secure the clips 5to the baseplate l.

Secondly each clip 5 has eight lugs 41, four on the upper side as shownin the drawing and four on the lower side and there is a complementaryrail foot abutting and clamping shoulder for each lug, eight in all,each differentially spaced from the centre of the clip bolt apertures 40of the respective clips,

The bolt anchorage devices at the respective sides of the rail aregenerally designated 61 and 62 respectively. Each device comprises abolt element 68 having a head 68a and a threaded shank portion 68b. Theshank portion 68b is in threaded engagement with an elongated nutelement 64 encased in a sleeve 63 of elastomeric material. The lower end64b of the nut element is enlarged and corrugated. The upper end of thenut element'64 has 'a non-circular exterior engaged in a correspondinglyshaped hole It; in the baseplate, so that the nut cannot rotate relativeto the baseplate although it can move vertically over asufficientdistance to enable the sleeve 63 to be expanded to engage thewall of the foundation hole 21.

The bolt 68 passes through an aperture 40 in each clip 5 and 67represents a washer between the bolt head 68a and the upper surface ofthe clip.

Tightening down of the bolt 68 firstly causes upward movement of the nut64 to effect expansion of the sleeve 63. After the non-circular upperend of the nut has engaged fully in the non-circular hole 1a in thebaseplate to bring a shoulder 64a against the underside of thebaseplate, further expansion of the sleeveis prevented and thereafterfurther tightening of the bolt causes its head 68a to approach thebaseplate 1 thereby tightening 'down the clip 5.

Reference to FIG. 4 will show that the lugs 41 are symmetrically spacedabout'the clip bolt aperture 40. The baseplate 1 has four recesses 43symmetrically spaced about each of its bolt holes'42.

As with the arrangement described with reference to FIGS. l to 3, theclips are invertible. Therefore if the clips on each side of the railare identical, the rail may be adjusted to one of eight differentpositions by appropriate adjustment of the clips. If, however, the clipsare dissimilar and complementary, as shown in FIGS. 4 and 5, with allthe 16 rail foot abutting and clamping shoulders being differentiallyspaced from the centres of the clip bolt aperture 40, the rail may beadjusted to sixteen different positions, with the clips beinginterchanged when necessary.

As will be seen from FIG. 4, complementary clip positions may beindicated on the clips by appropriate markings for example thealphabetical letters shown.

We claim:

1. A rail fastening arrangement for securing a flat bottom rail on afoundation having preformed holes therein comprising in combination a. abaseplate on which the flat bottom of the rail is adapted to rest andmeans for securing the baseplate to the performed holes in thefoundation;

b. a pair of rail clips one on each side of the rail;

c. bolt means passing through a bolt aperture in each clip and engagingin a preformed bolt hole in the baseplate;

(1. each clip having symmetrically spaced about its bolt aperture atleast one pair of projecting heel lugs and the baseplate havingsymmetrically spaced about its bolt hole a complementary number ofrecesses adapted to receive and locate the clip heel lugs;

. each clip being engageable with the baseplate with its lugs receivedand located in the baseplate recesses, in at least two alternativedispositions;

f. and each clip having for each lug a respective rail foot abutting andclamping shoulder, one of which rail foot abutting and clampingshoulders faces inwardly towards the rail foot for each alternativedisposition of engagement of the clip with the baseplate;

. and wherein for each clip, each respective rail foot abutting andclamping shoulder is differentially spaced from the centre of the boltaperture of the clip and wherein each clip has upper and loweroppositely facing sides, there being on each of said sides at least onepair of said projecting heel lugs symmetrically spaced about the boltaperture of the clip, and for each lug on each of said upper and loweropposite sides a respective rail foot abutting and clamping shoulder,each respective such shoulder being differentially spaced from thecentre of the bolt aperture of the clip.

2. A rail fastening as claimed in claim 1, wherein the two rail clipsone on each side of the rail are identical with one another. a

3. A rail fastening according to claim 1, wherein each clip has on eachside of its upper and lower oppositely facing sides four heel lugssymmetrically spaced about the bolt aperture of the clip, and for eachlug a respective rail foot abutting and clamping shoulder, with allsixteen of the rail foot abutting and clamping shoulders of the twocomplementary clips, one on each side of the rail, being differentiallyspaced from the bolt apertures of the respective clips.

4. A rail fastening arrangement according to claim 1, wherein the pairof clips, one on each side of the rail, each have at least tworespective rail foot abutting and clamping shoulders, with all saidrespective rail foot abutting and clamping shoulders beingdifferentially spaced from the bolt aperture centres of their respectiveclips, and the pair of clips being interchangeable,

one with the other.

5. A rail fastening arrangement according to claim 1, wherein the samebolt means which are employed to secure the clips to the baseplate, arealso employed to secure the baseplate to the foundation, the baseplatehaving only two through holes preformed therein, said holes registeringwith two preformed holes in the foundation.

6. A rail fastening arrangement according to claim 1, wherein the meansfor securing the baseplate to the preformed holes in the foundationcomprise, two threaded elements in threaded engagement with one another,a first one of said elements having an elongate cylindrical portionterminating in an enlarged head, an externally cylindrical sleeve ofelastomeric material encasing said elongate cylindrical portion and saidenlarged head, said elastomeric sleeve when substantially undeformedbeing a sliding fit within a foundation hole, and said second threadedelement being rotatable in one direction relative to the first elementto cause, firstly, the first element to move axially towards the secondelement,-this effecting deformation of the elastomeric sleeve intoengagement with the wall of the foundation hole, and following suchengagement, the baseplate to be urged towards the foundation.

7. A rail fastening arrangement according to claim 6, including a pad ofelastomeric material disposed between the baseplate and the foundation.

8. A rail fastening arrangement according to claim 6, wherein said firstthreaded element is a bolt whose stem is surrounded by said elastomericsleeve, said stem and said sleeve passing from below through a hole inthe baseplate and wherein said second threaded element is a nut, therebeing a metal washer located between the nut and the elastomeric sleeve,whereby on tightening said nut on said bolt, firstly said bolt is movedaxially upwardly and said sleeve is compressed between the enlarged headof the bolt and said washer, and is deformed into engagement with thewall of the foundation hole, and following such engagement and on fur-10. A rail fastening arrangement according to claim 6, wherein the metalbaseplate has non-circular through holes located to register with thepreformed holes of the foundation and wherein the bolt means securingthe baseplate to the foundation pass through the holes in registry, witheach foundation bolt means comprising a bolt .passing through thebaseplate to engage a nut member located in one of the foundation holes,the nut member having an elongate shank terminating at its end remotefrom the bolt in an enlarged head, said head and said shank beingencased by a sleeve of elastomeric material, and wherein on said boltbeing tightened, said nut is moved axially, with said elastomeric sleevebeing compressed between the enlarged head of the nut and the baseplate,so that said sleeve is deformed into engagement with the wall of thefoundation hole, and further, wherein said nut member has its endadjacent the baseplate so shaped that it can enter and key with one ofthe non-circular holes of the baseplate, whereby said nut is preventedfrom rotation relative to the baseplate.

11. A rail fastening arrangement according to claim 10, wherein saidbolt also passes through an aperture of a rail clip having its lugslocated and received in corresponding baseplate recesses, and whereintightening of said bolt is effective to urge said rail clip towards saidbaseplate.

1. A rail fastening arrangement for securing a flat bottom rail on afoundation having preformed holes therein comprising in combination a. abaseplate on which the flat bottom of the rail is adapted to rest andmeans for securing the baseplate to the performed holes in thefoundation; b. a pair of rail clips one on each side of the rail; c.bolt means passing through a bolt aperture in each clip and engaging ina preformed bolt hole in the baseplate; d. each clip havingsymmetrically spaced about its bolt aperture at least one pair ofprojecting heel lugs and the baseplate having symmetrically spaced aboutits bolt hole a complementary number of recesses adapted to receive andlocate the clip heel lugs; e. each clip being engageable with thebaseplate with its lugs received and located in the baseplate recesses,in at least two alternative dispositions; f. and each clip having foreach lug a respective rail foot abutting and clamping shoulder, one ofwhich rail foot abutting and clamping shoulders faces inwardly towardsthe rail foot for each alternative disposition of engagement of the clipwith the baseplate; g. and wherein for each clip, each respective railfoot abutting and clamping shoulder is differentially spaced from thecentre of the bolt aperture of the clip and wherein each clip has upperand lower oppositely facing sides, there being on each of said sides atleast one pair of said projecting heel lugs symmetrically spaced aboutthe bolt aperture of the clip, and for each lug on each of said upperand lower opposite sides a respective rail foot abutting and clampingshoulder, each respective such shoulder being differentially spaced fromthe centre of the bolt aperture of the clip.
 2. A rail fastening asclaimed in claim 1, wherein the two rail clips one on each side of therail are identical with one another.
 3. A rail fastening according toclaim 1, wherein each clip has on each side of its upper and loweroppositely facing sides four heel lugs symmetrically spaced about thebolt aperture of the clip, and for each lug a respective rail footabutting and clamping shoulder, with all sixteen of the rail footabutting and clamping shoulders of the two complementary clips, one oneach side of the rail, being differentially spaced from the boltapertures of the respective clips.
 4. A rail fastening arrangementaccording to claim 1, wherein the pair of clips, one on each side of therail, each have at least two respective rail foot abutting and clampingshoulders, with all said respective rail foot abutting and clampingshoulders being differentially spaced from the bolt aperture centres oftheir respective clips, and the pair of clips being interchangeable, onewith the other.
 5. A rail fastening arrangement according to claim 1,wherein the same bolt means which are employed to secure the clips tothe baseplate, are also employed to secure the baseplate to thefoundation, the baseplate having only two through holes preformedtherein, said holes registering with two preformed holes in thefoundation.
 6. A rail fastening arrangement according to claim 1,wherein the means for securing the baseplate to the preformed holes inthe foundation comprise, two threaded elements in threaded engagementwith one another, a first one of said elements having an elongatecylindrical portion terminating in an enlarged head, an externallycylindrical sleeve of elastomeric material encasing said elongatecylindrical portion and said enlarged head, said elastomeric sleeve whensubstantially undeformed being a sliding fit within a foundation hole,and said second threaded element being rotatable in one directionrelative to the first element to cause, firstly, the first element tomove axially towards the second element, this effecting deformation ofthe elastomeric sleeve into engagement with the wall of the foundationhole, and following such engagement, the baseplate to be urged towardsthe foundation.
 7. A rail fastening arrangement according to claim 6,including a pad of elastomeric material disposed between the baseplateand the foundation.
 8. A rail fastening arrangement according to claim6, wherein said first threaded element is a bolt whose stem issurrounded by said elastomeric sleeve, said stem and said sleeve passingfrom below through a hole in the baseplate and wherein said secondthreaded element is a nut, there being a metal washer located betweenthe nut and the elastomeric sleeve, whereby on tightening said nut onsaid bolt, firstly said bolt is moved axially upwardly and said sleeveis compressed between the enlarged head of the bolt and said washer, andis deformed into engagement with the wall of the foundation hole, andfollowing such engagement and on further tightening of said nut, saidwasher is caused to bear on the baseplate to urge the latter towards thefoundation.
 9. A rail fastening arrangement according to claim 8,including an elastomeric washer located between said metal washer andsaid baseplate.
 10. A rail fastening arrangement according to claim 6,wherein the metal baseplate has non-circular through holes located toregister with the preformed holes of the foundation and wherein the boltmeans securing the baseplate to the foundation pass through the holes inregistry, with each foundation bolt means comprising a bolt passingthrough the baseplate to engage a nut member located in one of thefoundation holes, the nut member having an elongate shank terminating atits end remote from the bolt in an enlarged head, said head and saidshank being encased by a sleeve of elastomeric material and wherein onsaid bolt being tightened, said nut is moved axially, with saidelastomeric sleeve being compressed between the enlarged head of the nutand the baseplate, so that said sleeve is deformed into engagement withthe wall of the foundation hole, and further, wherein said nut memberhas its end adjacent the baseplate so shaped that it can enter and keywith one of the non-circular holes of the baseplate, whereby said nut isprevented from rotation relative to the baseplate.
 11. A rail fasteningarrangement according to claim 10, wherein said bolt also passes throughan aperture of a rail clip having its lugs located and received incorresponding baseplate recesses, and wherein tightening of said bolt iseffective to urge said rail clip towards said baseplate.